Great time to value and pricing.
Room for Improvement:
Deployment automation needs some custom tooling.
I started using tomcat since version 4.X as development server with Eclipse.
Then I used it as a Production server for medium to large Enterprise intranets.
And finally I have setup deployments with Clustering for large ECommerce web sites with Apache HTTP Server as Front End.
From these experiences I can say that Tomcat is a really performing and PRODUCTION ready server.
Well tuned it can take very high loads provided underlying deployed applications are well coded as with any other JSP/Servlet Server.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Jan 28 2013